Improvement in locomotive smoke-stacks



l. HUGHES.

Locomotive Smoke-Stacks.A

N0. 142,851. Patented September,1873*..A`

Wimesses.

UNITED STATES PATENT OEEIcE.

JAMEs HUGHES, oF scuANTo'N, PENNSYLVANTA.

IMPROVEMENT IN LOCOMOTIVE SMOKE-STACKS.

Specification forming part of Letters Patent No. 142,851, datedSeptember 16, 1873 application filed August 4, 1873.

To all whom it may concern:

Be it known that I, JAMES HUGHES, of Scranton, in the county of Luzerneand State of Pennsylvania, have invented a new and Improved Oone forLocomotive SmokeStack, of which the following is a specification:

In the accompanying drawing, Figure l represents a vertical centralsection of a locomotive smoke-stack with my improved cone, and Fig. 2 isa vertical central section of the cone.

Similar letters of reference indicate corresponding parts.

rIhe object of my invention is to provide the smoke-stack of locomotiveswith an improved cone by which the draft is increased and the rapidwearing out of parts of the stack by the exhaust steam prevented.

In the cones hitherto used the exhaust steam strikes the cone, thenspreads outwardly and strikes the sides of the smoke-stack with fullforce, wearing out that part of the stack in short time. The steamescapes then along the circumference of the netting or bonnet,-

leaving the central part inoperative and creating a kind of vacuum whichis detrimental to the draft as it tends to prevent the free escape ofthe steam.

My invention, instead of being formed of a cone with one continuoussurface, consists of fiat plates and rings of varying sizes, which areplaced above each other in such a manner that the steam cannot passthrough without striking the plates and rings, varying thereby thedirection of the steam and distributing it equally so that it will passout from the stack without impinging on the sides of the same andbringing the bonnet into use over its whole surface. The draft isregulated by making the top plate and ring adjustable on the centralstandard.

In the drawing, A represents the smokestack ofthe locomotive; B, thecone which is attached to the upper bulging part of the same bysupporting rods or braces a, which are applied in suitable manner. ConeB consists of one or more circular plates, C, which carry centrally thevertical standard D, and, by means of side-supporting pieces b, one ormore rings, E, of gradually-increasing diameter. The inner edges ofrings E are turned up or iianged to assist the passage of the steam. Theupper end of standard D is threaded, and carries a smaller top disk, F,with a ring, G, connected thereto by arms d, which may be raised' andlowered for regulating the draft by the screw-nuts f. Ring G is ofsmaller diam-v eter than the inner diameter of the uppermost ring E. Theexhaust steam strikes the lower plate or disk C and ring E, passingthrough the inside of the rings E, and around the same, as indicated byarrows in Fig.1, so that the steam, is distributed uniformly over thebonnet and increases the draft. The diameter of the outer ring of thecone should be of larger size than that of the straight part of thesmoke-stack to prevent the direct impinging of the steam on the bonnetand the cutting out of that part of it.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The cone B, consisting of plates C, rings E, standardD with regulating top disk F, and ring G, arranged and constructed asdescribed.

JAMES HUGHES.

Witnesses:

EDWARD BALDWIN, PETER B. BAcKUs.

